Method and apparatus for sending reference signal, and method and apparatus for receiving reference signal

Abstract

In this disclosure, a first sending device determines an antenna port for a first reference signal. The first reference signal is at least one of at least two types of reference signals. The at least two types of reference signals correspond to a same configuration pattern, and the configuration pattern is used to indicate a time-frequency resource corresponding to each of a plurality of antenna ports. The first sending device sends the first reference signal on the antenna port for the first reference signal. T the first reference signal is carried on a first time-frequency resource, and the first time-frequency resource is a time-frequency resource corresponding to the antenna port for the first reference signal and indicated by the configuration pattern.

What is claimed is: 
     
         1 . A method for sending a reference signal, the method comprising:
 determining, by a first sending device, an antenna port for a first reference signal, wherein the first reference signal is at least one of at least two types of reference signals that correspond to a same configuration pattern for indicating a time-frequency resource corresponding to each of a plurality of antenna ports; and   sending, by the first sending device, the first reference signal on the antenna port for the first reference signal, wherein the first reference signal is carried on a first time-frequency resource, and the first time-frequency resource is a time-frequency resource corresponding to the antenna port for the first reference signal and indicated by the configuration pattern.   
     
     
         2 . The method according to  claim 1 , wherein the antenna port for the first reference signal is determined in all antenna ports supported by the sending device. 
     
     
         3 . The method according to  claim 1 , further comprising:
 sending, by the sending device, a second reference signal on at least one of the plurality of antenna ports, wherein the second reference signal is at least one of the at least two types of reference signals, a type of the first reference signal is different from a type of the second reference signal, the second reference signal is carried on a second time-frequency resource, and the second time-frequency resource is a time-frequency resource corresponding to the antenna port for the second reference signal and indicated by the configuration pattern.   
     
     
         4 . The method according to  claim 3 , wherein the second time-frequency resource comprises a part or all of the first time-frequency resource. 
     
     
         5 . The method according to  claim 3 , wherein the first reference signal is sent to one receiving device, and the second reference signal is sent to a plurality of receiving devices. 
     
     
         6 . The method according to  claim 3 , wherein:
 the first reference signal is a type used for data channel demodulation, and the second reference signal is a type used for control channel demodulation; or   the first reference signal is a type used for channel measurement, and the second reference signal is a type used for control channel demodulation; or   the first reference signal is a type used for data channel demodulation, and the second reference signal is a type used for channel measurement.   
     
     
         7 . The method according to  claim 3 , further comprising:
 sending, by the sending device, a third reference signal on at least one of the plurality of antenna ports, wherein the third reference signal is at least one of the at least two types of reference signals and is different from the type of the first reference signal and different from the type of the second reference signal, the third reference signal is carried on a third time-frequency resource, and the third time-frequency resource is a time-frequency resource corresponding to the antenna port for the third reference signal and indicated by the configuration pattern.   
     
     
         8 . The method according to  claim 7 , wherein the third time-frequency resource comprises a part or all of the first time-frequency resource, and the third time-frequency resource comprises a part or all of the second time-frequency resource. 
     
     
         9 . The method according to  claim 7 , wherein:
 the first reference signal is a type used for data channel demodulation, the second reference signal is a type used for control channel demodulation, and the third reference signal is a type used for channel measurement.   
     
     
         10 . The method according to  claim 1 , wherein:
 functions of the at least two types of reference signals are different, and the functions comprise at least one of the following: automatic gain control (AGC) adjustment, time-frequency synchronization, phase compensation, data channel demodulation, control channel demodulation, channel measurement, radio resource management (RRM) measurement, or positioning measurement; or   the at least two types of reference signals comprise at least two of: a cell-common reference signal (CRS), a channel state information-reference signal (CSI-RS), or a demodulation reference signal (DMRS).   
     
     
         11 . A method for receiving a reference signal, the method comprising:
 determining, by a first receiving device, an antenna port for a first reference signal, wherein the first reference signal is at least one of at least two types of reference signals that correspond to a same configuration pattern for indicating a time-frequency resource corresponding to each of a plurality of antenna ports; and   receiving, by the first receiving device, the first reference signal on the antenna port for the first reference signal, wherein the first reference signal is carried on a first time-frequency resource, and the first time-frequency resource is a time-frequency resource corresponding to the antenna port for the first reference signal and indicated by the configuration pattern.   
     
     
         12 . The method according to  claim 11 , wherein the antenna port for the first reference signal is determined in all antenna ports supported by the receiving device. 
     
     
         13 . The method according to  claim 11 , wherein at least one of the plurality of antenna ports is used to send a second reference signal, the second reference signal is at least one of the at least two types of reference signals, a type of the first reference signal is different from a type of the second reference signal, the second reference signal is carried on a second time-frequency resource, and the second time-frequency resource is a time-frequency resource corresponding to the antenna port for the second reference signal and indicated by the configuration pattern. 
     
     
         14 . The method according to  claim 13 , wherein the second time-frequency resource comprises a part or all of the first time-frequency resource. 
     
     
         15 . The method according to  claim 13 , wherein the first reference signal is sent to one receiving device, and the second reference signal is sent to a plurality of receiving devices. 
     
     
         16 . The method according to  claim 13 , wherein:
 the first reference signal is a type used for data channel demodulation, and the second reference signal is a type used for control channel demodulation; or   the first reference signal is a type used for channel measurement, and the second reference signal is a type used for control channel demodulation; or   the first reference signal is a type used for data channel demodulation, and the second reference signal is a type used for channel measurement.   
     
     
         17 . The method according to  claim 11 , wherein:
 functions of the at least two types of reference signals are different, and the functions comprise at least one of the following: automatic gain control (AGC) adjustment, time-frequency synchronization, phase compensation, data channel demodulation, control channel demodulation, channel measurement, radio resource management (RRM) measurement, or positioning measurement; or   the at least two types of reference signals comprise at least two of a cell-common reference signal (CRS), a channel state information-reference signal (CSI-RS), or a demodulation reference signal (DMRS).   
     
     
         18 . An apparatus for sending a reference signal, comprising:
 a storage medium including executable instructions; and   a processor, wherein the executable instructions, when executed by the processor, cause the apparatus to:
 determine an antenna port for a first reference signal, wherein the first reference signal is at least one of at least two types of reference signals that correspond to a same configuration pattern for indicating a time-frequency resource corresponding to each of a plurality of antenna ports, and 
 send the first reference signal on the antenna port for the first reference signal, wherein the first reference signal is carried on a first time-frequency resource, and the first time-frequency resource is a time-frequency resource corresponding to the antenna port for the first reference signal and indicated by the configuration pattern. 
   
     
     
         19 . The apparatus according to  claim 18 , wherein the antenna port for the first reference signal is determined in all antenna ports supported by the sending device. 
     
     
         20 . The apparatus according to  claim 18 , wherein the executable instructions, when executed by the processor, cause the apparatus to:
 send a second reference signal on at least one of the plurality of antenna ports, wherein the second reference signal is at least one of the at least two types of reference signals, a type of the first reference signal is different from a type of the second reference signal, the second reference signal is carried on a second time-frequency resource, and the second time-frequency resource is a time-frequency resource corresponding to the antenna port for the second reference signal and indicated by the configuration pattern.